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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Computation of Basic and Dilutive Net Income Per Share | The following table presents the computation of basic and diluted earnings per common share for the periods indicated (dollar and share amounts in thousands, except per share amounts):
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2018 |  | 2017 (1) |  | 2018 |  | 2017 (1)
Basic Earnings per Common Share |  |  |  |  |  |  |  |
Net income attributable to Company |  | $ | 29,694 |  |  | $ | 14,336 |  |  | $ | 59,311 |  |  | $ | 33,517 |
Less: Preferred stock dividends |  | (5,925 | ) |  | (3,225 | ) |  | (11,850 | ) |  | (6,450 | )
Net income attributable to Company's common stockholders |  | $ | 23,769 |  |  | $ | 11,111 |  |  | $ | 47,461 |  |  | $ | 27,067 |
Basic weighted average common shares outstanding |  | 115,211 |  |  | 111,863 |  |  | 113,623 |  |  | 111,792 |
Basic Earnings per Common Share |  | $ | 0.21 |  |  | $ | 0.10 |  |  | $ | 0.42 |  |  | $ | 0.24 |
Diluted Earnings per Common Share: |  |  |  |  |  |  |  |
Net income attributable to Company |  | $ | 29,694 |  |  | $ | 14,336 |  |  | $ | 59,311 |  |  | $ | 33,517 |
Less: Preferred stock dividends |  | (5,925 | ) |  | (3,225 | ) |  | (11,850 | ) |  | (6,450 | )
Add back: Interest expense on convertible notes for the period, net of tax |  | 2,633 |  |  | — |  |  | 5,267 |  |  | — |
Net income attributable to Company's common stockholders |  | $ | 26,402 |  |  | $ | 11,111 |  |  | $ | 52,728 |  |  | $ | 27,067 |
Weighted average common shares outstanding |  | 115,211 |  |  | 111,863 |  |  | 113,623 |  |  | 111,792 |
Net effect of assumed PSUs vested |  | 258 |  |  | — |  |  | 152 |  |  | — |
Net effect of assumed convertible notes conversion to common shares |  | 19,695 |  |  | — |  |  | 19,695 |  |  | — |
Diluted weighted average common shares outstanding |  | 135,164 |  |  | 111,863 |  |  | 133,470 |  |  | 111,792 |
Diluted Earnings per Common Share |  | $ | 0.20 |  |  | $ | 0.10 |  |  | $ | 0.40 |  |  | $ | 0.24 |
(1) | For the three and six months ended June 30, 2017, the Company's Convertible Notes were determined to be anti-dilutive and were not included in the calculation of diluted earnings per common share. There were no dilutive PSU awards during the three and six months ended June 30, 2017.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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